nx_media_exclusion.nx

nx_media_exclusion.nx -- LIB: the media-recovery EXCLUSION gate (safety-by-construction). BEFORE any recovered or indexed image is accepted, its perceptual fingerprint (dHash) is checked against a do-not-recover BLOCKLIST (takedown / NCMEC-style hash-match feed). A match -- EXACT or within a per-entry Hamming threshold, so re-encoded / resized RE-UPLOADS are caught too -- means REFUSE. Content removed for being illegal or non-consensual stays removed, including its copies. Reuses nx_phash / nx_simhash (zero new hash math). The blocklist is DATA (a TSV), never hardcoded, and starts empty. license_tier: ORIGINAL